György Kriska (30 July 1964, Vác, Hungary) is a scientific advisor at Centre for Ecological Research and associate professor at Eötvös University in Budapest, Hungary. He has taught methodology in biology teaching and freshwater invertebrate identification for more than 20 years. He received his PhD in biology from the Eötvös University, Budapest, in 2000. He received the award of Doctor of Science (DSc) from the Hungarian Academy of Sciences in 2021. He has published numerous research papers in visual ecology. His research interest is polarised light pollution and polarisation ecological traps.

• Identification Key: Freshwater Invertebrates.- Sponges: Porifera.- Cnidarians: Cnidaria.- Flatworms: Platyhelminthes.- Hairybacks: Gastrotricha; Water Bears: Tardigrada.- Rotifers: Rotifera.- Horsehair Worms: Nematomorpha; Roundworms: Nematoda.- Snails, Limpets and Mussels: Mollusca.- Segmented Worms: Annelida.- Aquatic Spiders and Mites: Chelicerata.- Crustaceans: Crustacea.- Springtails: Collembola.- Mayflies: Ephemeroptera.- Dragonflies and Damselflies: Odonata.- Stoneflies: Plecoptera.- Water Bugs: Heteroptera.- Beetles: Coleoptera.- Sialidae, Osmylidae, Sisyridae.- Caddisflies: Trichoptera.- Moths: Lepidoptera.- True Flies: Diptera.- Moss Animals: Bryozoa.

György Kriska (30 July 1964, Vác, Hungary) is a scientific advisor at Centre for Ecological Research and associate professor at Eötvös University in Budapest, Hungary. He has taught methodology in biology teaching and freshwater invertebrate identification for more than 20 years. He received his PhD in biology from the Eötvös University, Budapest, in 2000. He received the award of Doctor of Science (DSc) from the Hungarian Academy of Sciences in 2021. He has published numerous research papers in visual ecology. His research interest is polarised light pollution and polarisation ecological traps.

• Identification Key: Freshwater Invertebrates.- Sponges: Porifera.- Cnidarians: Cnidaria.- Flatworms: Platyhelminthes.- Hairybacks: Gastrotricha; Water Bears: Tardigrada.- Rotifers: Rotifera.- Horsehair Worms: Nematomorpha; Roundworms: Nematoda.- Snails, Limpets and Mussels: Mollusca.- Segmented Worms: Annelida.- Aquatic Spiders and Mites: Chelicerata.- Crustaceans: Crustacea.- Springtails: Collembola.- Mayflies: Ephemeroptera.- Dragonflies and Damselflies: Odonata.- Stoneflies: Plecoptera.- Water Bugs: Heteroptera.- Beetles: Coleoptera.- Sialidae, Osmylidae, Sisyridae.- Caddisflies: Trichoptera.- Moths: Lepidoptera.- True Flies: Diptera.- Moss Animals: Bryozoa.

György Kriska (30 July 1964, Vác, Hungary) is a scientific advisor at Centre for Ecological Research and associate professor at Eötvös University in Budapest, Hungary. He has taught methodology in biology teaching and freshwater invertebrate identification for more than 20 years. He received his PhD in biology from the Eötvös University, Budapest, in 2000. He received the award of Doctor of Science (DSc) from the Hungarian Academy of Sciences in 2021. He has published numerous research papers in visual ecology. His research interest is polarised light pollution and polarisation ecological traps.

• Identification Key: Freshwater Invertebrates.- Sponges: Porifera.- Cnidarians: Cnidaria.- Flatworms: Platyhelminthes.- Hairybacks: Gastrotricha; Water Bears: Tardigrada.- Rotifers: Rotifera.- Horsehair Worms: Nematomorpha; Roundworms: Nematoda.- Snails, Limpets and Mussels: Mollusca.- Segmented Worms: Annelida.- Aquatic Spiders and Mites: Chelicerata.- Crustaceans: Crustacea.- Springtails: Collembola.- Mayflies: Ephemeroptera.- Dragonflies and Damselflies: Odonata.- Stoneflies: Plecoptera.- Water Bugs: Heteroptera.- Beetles: Coleoptera.- Sialidae, Osmylidae, Sisyridae.- Caddisflies: Trichoptera.- Moths: Lepidoptera.- True Flies: Diptera.- Moss Animals: Bryozoa.